Question

For 150 GM sample of phosphorus trichloride pcl3 calculate the mass of one pcl3 molecules

Answer 1

Answer:

Molar mass of PCl3  =  31 + 3 x 35.5 =  137.5 gm / mol

1. no. of moles of PCl3  =  150 / 137.5 = 1.09 moles  

    No. of mole sof Cl   =  3 x 1.09  =  3.27 moles  

2.no. of gram atoms = no. of moles = 3.27 moles  

3.no. of molecules of PCl3  =  6.02 x 1023 x 1.09  =  6.56 x 1023 molecules

HOPE THIS HELPS YOU

Explanation: